Minoxidil EP Impurity D CAS 75105-16-7
| CAS No. | 75105-16-7 |
| Molecular Formula | C11H12N4O4S |
| Molecular Weight | 296.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Minoxidil EP Impurity D meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Minoxidil EP Impurity D (CAS 75105-16-7), a pharmacopoeial impurity reference standard (molecular formula C11H12N4O4S, MW 296.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Minoxidil EP Impurity D (C11H12N4O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C11H12N4O4S |
| Molecular Weight | 296.30 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Minoxidil Standards
- Minoxidil Sulfate (CAS 83701-22-8)
- Minoxidil Impurity 54 (CAS CATO-C4X-170054)
- Minoxidil Impurity 63 (CAS CATO-C4X-170063)
- Minoxidil Impurity 65 (CAS CATO-C4X-170065)
- Minoxidil Impurity 34 (CAS 2889432-05-5)
- Minoxidil Impurity 38 (CAS CATO-C4X-170038)
- Minoxidil Impurity 27 (CAS CATO-C4X-170027)
- Minoxidil Impurity 50 (CAS CATO-C4X-170050)
Recommended Standards
- Sulfadimethoxine EP Impurity F (CAS 19868-00-9)
- (2E,5E)-2,5-Bis[(2-fluorophenyl)methylidene]cyclopentan-1-one (CAS 1158188-88-5)
- Sulfadimethoxine Impurity 13 (CAS CATO-C4X-150413)
- 2,2,2-trifluoroethyl N-[2-(dimethylamino)-2-(thiophen-2-yl)ethyl]carbamate (CAS 1197466-19-5)
- Octreotide Impurity 31 (CAS CATO-C4X-152031)
- Gabapentin Impurity 12 (CAS 4355-15-1)
- Cinacalcet Impurity 65 (CAS 1860814-97-6)
- 4-(Aminomethyl)pyridine-2-carbonitrile hydrochloride (CAS 1461713-44-9)
- 2,5-Dimethylquinoline (CAS 26190-82-9)
- N-(2-(Furan-3-yl)ethyl)furan-2-carboxamide (CAS 1428355-30-9)
- 2-Methylthieno[2,3-d]pyrimidin-4(3H)-one hydrochloride (CAS 1559062-08-6)
- 3-Amino-5-(4-Fluorophenyl)Thiophene-2-Carboxylic Acid (CAS 187949-92-4)
- n1-Phenyl-n1-(propan-2-yl)benzene-1,4-diamine (CAS 3085-82-3)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
Why CATO?
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